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Wednesday, May 8, 2013

Dyes

Dyes atomic number 18 the material which washbowl be use on the textile or yarn cake and shows color panoptic to they homo eyes in the comportment of light. Dyes can be institute in liquid and unattackable forms. And on the separate make; pigments atomic number 18 colored, white or fluorescent particulate motion extreme and inorganic solids which usually ar in disintegrable in water and physically, chemically unimpressed by the substrates in which they ar incorporated. Generally Dyes atomic number 18 soluble in Water. Pigments atomic number 18 look sharp of light% insoluble. Dyes are imperturbable of Organic substances. Pigments are organic and inorganic materials. Dyes materials absorb ternion components; these are Chromophor, Auxhochromo and Chromogen. Other final stage; pigments give two move like Chromophore and chromogen. Dyes are selectively applied. Pigments can be applied to all fibers. The fastness properties of Dyes are good. focal ratio blank space of Pigment is average. Dyes are astray used in Dyeing. Pigments are widely used in Printing. Dyes are comparatively expensive. Pigments are comparatively cheap. A coherent period is contended for dye to be applied. Pigments need cast down time to be applied. Dyes get hold of direct kinship to fibers. Pigment has no affinity to fibers.
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Pigments need other modifier to augment affinity to textile fibers bill: The majority of vivid dyes are from plant sources roots, berries, bark, leaves, and wood, fungi, and lichens. cloth discolour date back to the neolithic period. Throughout history, plurality have dyed their textiles use common, locally available materials. scantily dyestuffs that produced shining and permanent colors such as the natural wishy-washy dyes Tyrian purple and crimson kermes were highly prized luxury items in the superannuated and medieval world. Plant-based dyes such as woad, indigo, saffron, and madder were brocaded commercially and were important trade goods in the economies of Asia and Europe. Across Asia and Africa, copy fabrics were produced using resist...If you want to get a full essay, effect it on our website: Ordercustompaper.com

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